/**
* Returns the list of all Java threads.
*
* @param[out] threads resulting threads list
* @param[out] count_ptr number of threads in the resulting list
*/
IDATA VMCALL jthread_get_all_threads(jthread ** threads, jint * count_ptr)
{
assert(threads);
assert(count_ptr);
hythread_group_t java_thread_group = get_java_thread_group();
assert(java_thread_group);
hythread_iterator_t iterator = hythread_iterator_create(java_thread_group);
IDATA count = hythread_iterator_size(iterator);
IDATA java_thread_count = 0;
for (IDATA i = 0; i < count; i++) {
hythread_t native_thread = hythread_iterator_next(&iterator);
vm_thread_t vm_thread = jthread_get_vm_thread(native_thread);
if (vm_thread && vm_thread->java_thread) {
java_thread_count++;
}
}
jthread *java_threads = (jthread*)malloc(sizeof(jthread) * java_thread_count);
if (!java_threads) {
hythread_iterator_release(&iterator);
return TM_ERROR_OUT_OF_MEMORY;
}
hythread_iterator_reset(&iterator);
java_thread_count = 0;
for (IDATA i = 0; i < count; i++) {
hythread_t native_thread = hythread_iterator_next(&iterator);
vm_thread_t vm_thread = jthread_get_vm_thread(native_thread);
if (vm_thread && vm_thread->java_thread) {
hythread_suspend_disable();
ObjectHandle thr = oh_allocate_local_handle();
assert(thr);
thr->object = vm_thread->java_thread->object;
assert(thr->object);
hythread_suspend_enable();
java_threads[java_thread_count++] = thr;
}
}
*threads = java_threads;
*count_ptr = (jint)java_thread_count;
IDATA status = hythread_iterator_release(&iterator);
return status;
} // jthread_get_all_threads
hy_inline void test_hythread_suspend_disable()
{
register hythread_t thread = hythread_self();
// Check that current thread is in default thread group.
// Justification: GC suspends and enumerates threads from
// default group only.
assert(((HyThread_public *)thread)->group == get_java_thread_group());
((HyThread_public *)thread)->disable_count++;
//port_rw_barrier();
if (thread->request && thread->disable_count == 1) {
// enter to safe point if suspend request was set
// and suspend disable was made a moment ago
// (it's a point of entry to the unsafe region)
hythread_safe_point_other(thread);
}
return;
} // test_hythread_suspend_disable
/**
* Returns the number of all Java threads.
*
* @param[out] count_ptr number of threads.
*/
IDATA VMCALL jthread_get_thread_count(jint * count_ptr)
{
assert(count_ptr);
hythread_group_t java_thread_group = get_java_thread_group();
assert(java_thread_group);
hythread_iterator_t iterator = hythread_iterator_create(java_thread_group);
IDATA count = hythread_iterator_size(iterator);
IDATA java_thread_count = 0;
for (IDATA i = 0; i < count; i++) {
hythread_t native_thread = hythread_iterator_next(&iterator);
vm_thread_t vm_thread = jthread_get_vm_thread(native_thread);
if (vm_thread) {
java_thread_count++;
}
}
*count_ptr = (jint)java_thread_count;
IDATA status = hythread_iterator_release(&iterator);
return status;
} // jthread_get_thread_count
/**
* Returns the number of blocked threads.
*
* @param[out] count_ptr number of threads.
*/
IDATA VMCALL jthread_get_blocked_count(jint * count_ptr)
{
assert(count_ptr);
hythread_group_t java_thread_group = get_java_thread_group();
assert(java_thread_group);
hythread_iterator_t iterator = hythread_iterator_create(java_thread_group);
IDATA count = hythread_iterator_size(iterator);
IDATA thread_count = 0;
for (IDATA i = 0; i < count; i++) {
hythread_t native_thread = hythread_iterator_next(&iterator);
if (native_thread
&& hythread_is_blocked_on_monitor_enter(native_thread))
{
thread_count++;
}
}
*count_ptr = (jint)thread_count;
IDATA status = hythread_iterator_release(&iterator);
return status;
} // jthread_get_blocked_count
